如何在反应组件的子代中模拟e.preventDefault

试试这个

link.simulate('click', {
  preventDefault: () => {
  }
 });

 test('simulates click events', () => {
    const e = { stopPropagation: jest.fn() };
    const component = shallow();
    const li = component.find('li').at(0).childAt(0)
    li.props().onClick(e)

    expect();
  });